diff --git a/.github/workflows/phpcs.yml b/.github/workflows/phpcs.yml
index 9c81412..88dba59 100644
--- a/.github/workflows/phpcs.yml
+++ b/.github/workflows/phpcs.yml
@@ -33,7 +33,7 @@ jobs:
           tools: composer, cs2pr
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
 
       - name: Detect coding standard violations
         run: ./vendor/bin/phpcs -q --report=checkstyle | cs2pr
diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
index a082593..742e9f8 100644
--- a/.github/workflows/phpunit.yml
+++ b/.github/workflows/phpunit.yml
@@ -54,7 +54,7 @@ jobs:
           extensions: mysql
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
 
       - name: Setup Test Environment
         run: bash bin/install-wp-tests.sh wordpress_test root root 127.0.0.1 ${{ matrix.wp-version }}